Curve rope around corner
Just borrow bits from your existing geometry. (If you model a lot, you learn to be lazy)


CtrlR cut a loop round the middle of your spool, if there isn't one there already
ShiftD duplicate it and P separate the selection into a new object
In Edit Mode, S scale it out about its median point a bit, Xdelete its bottom 2 edges
E Zextrude the new end vertices down in Z
.. and Header > Object Menu > convert to a curve.




You can bevel the curve in its Data tab > Geometry panel, and keep the bevel resolution down for a low-poly rope, or in the Header menu again, Edit Mode, all selected,Curve > Set Spline type to Bezier, and V set the control points to automatic to get a smooth rope... all sorts.